Fashionable Friday -1860's Civil War Era (Victorian) Philadelphia Woman in Checkered Hoop Dress

This 1860's CDV of an unidentified Philadelphia, PA woman in a checkered, hoop dress is simple, but interesting. I'm not an expert at deciphering fabrics, but this dress has a very striking checkered fabric with dark waistband. There is also a dark piece of matching trim running down the length of the pagoda sleeves. In addition, she has the typical 1860's small white collar.  Her hair is worn in the style of the times; parted in the middle and pulled back in a bun and note her decorative headdress. This young woman was quite lovely and demure in her pose.

It is very hard to tell from the scan, but it appears the photographer lightly tinted her cheeks.  This photograph appears to have been taken between 1862 to early 1864.  The back of the photo is almost more interesting than the front.  The photographer is listed as "Rehn & Sons' New & commodious Ground floor Galleries.  510 Arch Street Philadelphia. 

 I found a number of similar time frame photos on Google by Rehn & Sons, but little information on the photographer.  I found this information on Ancestry.com in the 1864 Philadelphia City Directory, but due to the large amount of Rehns in Philadelphia was not able to pin down the exact name of which was the father and/or the sons.